无线技术：千赫兹到兆赫兹

English | 2025 | ISBN: 1032728426 | 269 pages | True PDF EPUB | 25.19 MB

The text contains all the essential elements of communication principles, devices, circuits, antennas, and systems covering the electromagnetic spectrum from KHz to MHz of radio frequency (RF) that was developed in the formative stage of wireless technology. Also, the digital revolution, that has changed the landscape of modern electronics for wireless technology, has been discussed emphasizing the fundamentals including digital computers. The presentation of the book is in a concise yet complete way and stresses the physical and technical aspects with application viewpoints but using minimum possible mathematics.

The book

Discusses the historical background of different developments of wireless technology from KHz to MHz and going through the GHz to THz in due perspective to provide a holistic view of the development of wireless technology from its inception to contemporary times. Contains in brief the basic concepts of electromagnetism like Maxwell’s wave equation, evanescent waves, surface waves, plasmonic waves that are used in wireless technology in some form or the other. Highlights the need for modulation and covers various modulation techniques such as continuous wave and pulse analogue modulation and modulation/demodulation systems that were developed in the formative stage of the development of wireless technology in the RF frequency range of KHz to MHz. Discusses the physical concepts and application view-points of active devices, RF transmission lines, antennas and systems used at KHz to MHz frequency domain of wireless technology. Covers the digital revolution that has changed the wholesale electronic systems of modern wireless technology, and the development of digital computers has also been discussed with a brief overview of laptops, supercomputers, and upcoming quantum computers.

This overall scenario of historical perspective of wireless technology from KHz to THz and technical developments from KHz to MHz in the RF domain during the formative stage of development of wireless technology including fundamental developments related to digital revolution is expected to attract the interest of the entry level students, research scholars, professionals, and even the general readers alike with a new vision to have a quick yet in-depth glimpse of the progress of wireless technology since its inception till today. It is primarily written for junior undergraduate students in the fields of electrical engineering, electronics and communication engineering, wireless communication, telecommunication, and computer engineering. Research scholars and professionals can also refresh their idea of the developments of wireless technology during its formative stage and can get a flavour of the route to modern developments that have taken place henceforth.

该文本涵盖了无线电频（RF）电磁谱从KHz到MHz的无线技术通信原则、设备、电路、天线和系统的所有关键要素，包括数字革命对现代电子学的影响。讨论了数字计算机的基本原理，并且以简洁但完整的呈现方式强调物理和技术方面以及应用观点，同时尽量减少数学公式。

本书

从宏观角度回顾了无线技术从KHz到MHz的发展历程及其在GHz至THz范围内的进展，以便为读者提供无线技术发展的全貌。 简要介绍了电磁学的基本概念，包括麦克斯韦波动方程、感应波、表面波和等离子体波等无线技术中使用的各种波型。 强调了调制的重要性，并详细讨论了连续波和脉冲模拟调制等各种调制技术和相关的调制/解调系统，在早期无线电频范围内开发的无线技术发展阶段中。 讨论无线技术KHz到MHz频率范围内的有源设备、射频传输线、天线及其系统的物理概念以及应用观点。 涵盖了现代无线电子系统中数字化革命所带来的变化，并且简要介绍了笔记本电脑、超级计算机和即将到来的量子计算机等数字计算机的发展。

在无线技术发展的早期阶段，从KHz到MHz频率范围内技术发展的一系列历史背景和基本开发的核心内容（包括数字化革命）的整体情况将吸引入门级学生、研究学者、专业人士以及普通读者。他们对无线技术自诞生以来的进步有了新的视角，并且可以在短时间内获得更深层次的了解。

本书主要面向电气工程、电子与通信工程、无线通信、电信和计算机工程等领域的初级本科生。研究学者和专业人士也可以通过本书回顾无线技术早期发展阶段的发展情况，并对未来的现代发展有初步的认识。

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